Why do I always think others are mad at me me when I don't get a reply right away?

My head starts to spin thinking crazy thoughts, when I send people who know me and I know them an email or message on FB and I don't get a reply I automatically think they are mad at me, they heard crap about me. I don't like when others are mad at me. I hate it. I want everyone to like me and when I feel there withdrawn my head starts to spin. I need to know now, I need to get a reply when I send someone messages. Maybe I'm thinking in too much of this, I need to get off of FB and get my house in order. Why can't I accept who cares what others think about me, if they don't like me thats there loss.  I would love to feel this way, but its hard. I guess I don't have alot of friends that I can talk to on the phone. Since I have moved out to the desert, its been hard to find friends. Thats why I like working at least I have someone to talk to. Talking to my animals is getting old.  : ( I'm sad and lonely.